How is washing soda prepared from sodium carbonate()? Give its chemical equation. State the type of this salt. Name the type of hardness of water which can be removed by it?
Open in App
Solution
Solvay's process:
Washing soda() is synthesized through Solvay's process.
It involves the reaction of sodium chloride(), ammonia() and carbon dioxide() in water.
Carbon dioxide() involved is produced through calcium carbonate() and the calcium oxide() left is used in recovering ammonia().
At first, sodium bicarbonate() is obtained which is then converted to sodium carbonate() on heating.
Finally, washing soda() is produced by the recrystallization of sodium carbonate().
is formed by the combination of a strong base and a weak acid.
Hence, is a basic salt
It can remove both temporary and permanent hardness.